runtime.cc revision eb7c144a6aff7da673ba53d501c46f00311d4d7f
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include "runtime.h" 18 19// sys/mount.h has to come before linux/fs.h due to redefinition of MS_RDONLY, MS_BIND, etc 20#include <sys/mount.h> 21#ifdef __linux__ 22#include <linux/fs.h> 23#include <sys/prctl.h> 24#endif 25 26#define ATRACE_TAG ATRACE_TAG_DALVIK 27#include <cutils/trace.h> 28#include <signal.h> 29#include <sys/syscall.h> 30#include "base/memory_tool.h" 31 32#include <cstdio> 33#include <cstdlib> 34#include <limits> 35#include <memory_representation.h> 36#include <vector> 37#include <fcntl.h> 38 39#include "JniConstants.h" 40#include "ScopedLocalRef.h" 41#include "arch/arm/quick_method_frame_info_arm.h" 42#include "arch/arm/registers_arm.h" 43#include "arch/arm64/quick_method_frame_info_arm64.h" 44#include "arch/arm64/registers_arm64.h" 45#include "arch/instruction_set_features.h" 46#include "arch/mips/quick_method_frame_info_mips.h" 47#include "arch/mips/registers_mips.h" 48#include "arch/mips64/quick_method_frame_info_mips64.h" 49#include "arch/mips64/registers_mips64.h" 50#include "arch/x86/quick_method_frame_info_x86.h" 51#include "arch/x86/registers_x86.h" 52#include "arch/x86_64/quick_method_frame_info_x86_64.h" 53#include "arch/x86_64/registers_x86_64.h" 54#include "art_field-inl.h" 55#include "art_method-inl.h" 56#include "asm_support.h" 57#include "atomic.h" 58#include "base/arena_allocator.h" 59#include "base/dumpable.h" 60#include "base/stl_util.h" 61#include "base/unix_file/fd_file.h" 62#include "class_linker-inl.h" 63#include "compiler_callbacks.h" 64#include "debugger.h" 65#include "elf_file.h" 66#include "entrypoints/runtime_asm_entrypoints.h" 67#include "experimental_flags.h" 68#include "fault_handler.h" 69#include "gc/accounting/card_table-inl.h" 70#include "gc/heap.h" 71#include "gc/space/image_space.h" 72#include "gc/space/space-inl.h" 73#include "handle_scope-inl.h" 74#include "image.h" 75#include "instrumentation.h" 76#include "intern_table.h" 77#include "interpreter/interpreter.h" 78#include "jit/jit.h" 79#include "jni_internal.h" 80#include "linear_alloc.h" 81#include "lambda/box_table.h" 82#include "mirror/array.h" 83#include "mirror/class-inl.h" 84#include "mirror/class_loader.h" 85#include "mirror/field.h" 86#include "mirror/method.h" 87#include "mirror/stack_trace_element.h" 88#include "mirror/throwable.h" 89#include "monitor.h" 90#include "native/dalvik_system_DexFile.h" 91#include "native/dalvik_system_VMDebug.h" 92#include "native/dalvik_system_VMRuntime.h" 93#include "native/dalvik_system_VMStack.h" 94#include "native/dalvik_system_ZygoteHooks.h" 95#include "native/java_lang_Class.h" 96#include "native/java_lang_DexCache.h" 97#include "native/java_lang_Object.h" 98#include "native/java_lang_Runtime.h" 99#include "native/java_lang_String.h" 100#include "native/java_lang_StringFactory.h" 101#include "native/java_lang_System.h" 102#include "native/java_lang_Thread.h" 103#include "native/java_lang_Throwable.h" 104#include "native/java_lang_VMClassLoader.h" 105#include "native/java_lang_ref_FinalizerReference.h" 106#include "native/java_lang_ref_Reference.h" 107#include "native/java_lang_reflect_Array.h" 108#include "native/java_lang_reflect_Constructor.h" 109#include "native/java_lang_reflect_Field.h" 110#include "native/java_lang_reflect_Method.h" 111#include "native/java_lang_reflect_Proxy.h" 112#include "native/java_util_concurrent_atomic_AtomicLong.h" 113#include "native/libcore_util_CharsetUtils.h" 114#include "native/org_apache_harmony_dalvik_ddmc_DdmServer.h" 115#include "native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.h" 116#include "native/sun_misc_Unsafe.h" 117#include "native_bridge_art_interface.h" 118#include "oat_file.h" 119#include "oat_file_manager.h" 120#include "os.h" 121#include "parsed_options.h" 122#include "profiler.h" 123#include "quick/quick_method_frame_info.h" 124#include "reflection.h" 125#include "runtime_options.h" 126#include "ScopedLocalRef.h" 127#include "scoped_thread_state_change.h" 128#include "sigchain.h" 129#include "signal_catcher.h" 130#include "signal_set.h" 131#include "thread.h" 132#include "thread_list.h" 133#include "trace.h" 134#include "transaction.h" 135#include "utils.h" 136#include "verifier/method_verifier.h" 137#include "well_known_classes.h" 138 139namespace art { 140 141// If a signal isn't handled properly, enable a handler that attempts to dump the Java stack. 142static constexpr bool kEnableJavaStackTraceHandler = false; 143Runtime* Runtime::instance_ = nullptr; 144 145struct TraceConfig { 146 Trace::TraceMode trace_mode; 147 Trace::TraceOutputMode trace_output_mode; 148 std::string trace_file; 149 size_t trace_file_size; 150}; 151 152Runtime::Runtime() 153 : resolution_method_(nullptr), 154 imt_conflict_method_(nullptr), 155 imt_unimplemented_method_(nullptr), 156 instruction_set_(kNone), 157 compiler_callbacks_(nullptr), 158 is_zygote_(false), 159 must_relocate_(false), 160 is_concurrent_gc_enabled_(true), 161 is_explicit_gc_disabled_(false), 162 dex2oat_enabled_(true), 163 image_dex2oat_enabled_(true), 164 default_stack_size_(0), 165 heap_(nullptr), 166 max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation), 167 monitor_list_(nullptr), 168 monitor_pool_(nullptr), 169 thread_list_(nullptr), 170 intern_table_(nullptr), 171 class_linker_(nullptr), 172 signal_catcher_(nullptr), 173 java_vm_(nullptr), 174 fault_message_lock_("Fault message lock"), 175 fault_message_(""), 176 threads_being_born_(0), 177 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)), 178 shutting_down_(false), 179 shutting_down_started_(false), 180 started_(false), 181 finished_starting_(false), 182 vfprintf_(nullptr), 183 exit_(nullptr), 184 abort_(nullptr), 185 stats_enabled_(false), 186 is_running_on_memory_tool_(RUNNING_ON_MEMORY_TOOL), 187 profiler_started_(false), 188 instrumentation_(), 189 main_thread_group_(nullptr), 190 system_thread_group_(nullptr), 191 system_class_loader_(nullptr), 192 dump_gc_performance_on_shutdown_(false), 193 preinitialization_transaction_(nullptr), 194 verify_(verifier::VerifyMode::kNone), 195 allow_dex_file_fallback_(true), 196 target_sdk_version_(0), 197 implicit_null_checks_(false), 198 implicit_so_checks_(false), 199 implicit_suspend_checks_(false), 200 no_sig_chain_(false), 201 is_native_bridge_loaded_(false), 202 zygote_max_failed_boots_(0), 203 experimental_flags_(ExperimentalFlags::kNone) { 204 CheckAsmSupportOffsetsAndSizes(); 205 std::fill(callee_save_methods_, callee_save_methods_ + arraysize(callee_save_methods_), 0u); 206} 207 208Runtime::~Runtime() { 209 if (is_native_bridge_loaded_) { 210 UnloadNativeBridge(); 211 } 212 if (dump_gc_performance_on_shutdown_) { 213 // This can't be called from the Heap destructor below because it 214 // could call RosAlloc::InspectAll() which needs the thread_list 215 // to be still alive. 216 heap_->DumpGcPerformanceInfo(LOG(INFO)); 217 } 218 219 Thread* self = Thread::Current(); 220 const bool attach_shutdown_thread = self == nullptr; 221 if (attach_shutdown_thread) { 222 CHECK(AttachCurrentThread("Shutdown thread", false, nullptr, false)); 223 self = Thread::Current(); 224 } else { 225 LOG(WARNING) << "Current thread not detached in Runtime shutdown"; 226 } 227 228 { 229 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 230 shutting_down_started_ = true; 231 while (threads_being_born_ > 0) { 232 shutdown_cond_->Wait(self); 233 } 234 shutting_down_ = true; 235 } 236 // Shutdown and wait for the daemons. 237 CHECK(self != nullptr); 238 if (IsFinishedStarting()) { 239 self->ClearException(); 240 self->GetJniEnv()->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 241 WellKnownClasses::java_lang_Daemons_stop); 242 } 243 244 Trace::Shutdown(); 245 246 if (attach_shutdown_thread) { 247 DetachCurrentThread(); 248 self = nullptr; 249 } 250 251 // Shut down background profiler before the runtime exits. 252 if (profiler_started_) { 253 BackgroundMethodSamplingProfiler::Shutdown(); 254 } 255 256 // Make sure to let the GC complete if it is running. 257 heap_->WaitForGcToComplete(gc::kGcCauseBackground, self); 258 heap_->DeleteThreadPool(); 259 if (jit_.get() != nullptr) { 260 VLOG(jit) << "Deleting jit thread pool"; 261 // Delete thread pool before the thread list since we don't want to wait forever on the 262 // JIT compiler threads. 263 jit_->DeleteThreadPool(); 264 } 265 266 // Make sure our internal threads are dead before we start tearing down things they're using. 267 Dbg::StopJdwp(); 268 delete signal_catcher_; 269 270 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended. 271 delete thread_list_; 272 273 // Delete the JIT after thread list to ensure that there is no remaining threads which could be 274 // accessing the instrumentation when we delete it. 275 if (jit_.get() != nullptr) { 276 VLOG(jit) << "Deleting jit"; 277 jit_.reset(nullptr); 278 } 279 280 // Shutdown the fault manager if it was initialized. 281 fault_manager.Shutdown(); 282 283 delete monitor_list_; 284 delete monitor_pool_; 285 delete class_linker_; 286 oat_file_manager_.reset(); 287 delete heap_; 288 delete intern_table_; 289 delete java_vm_; 290 Thread::Shutdown(); 291 QuasiAtomic::Shutdown(); 292 verifier::MethodVerifier::Shutdown(); 293 294 // Destroy allocators before shutting down the MemMap because they may use it. 295 linear_alloc_.reset(); 296 low_4gb_arena_pool_.reset(); 297 arena_pool_.reset(); 298 MemMap::Shutdown(); 299 300 // TODO: acquire a static mutex on Runtime to avoid racing. 301 CHECK(instance_ == nullptr || instance_ == this); 302 instance_ = nullptr; 303} 304 305struct AbortState { 306 void Dump(std::ostream& os) const { 307 if (gAborting > 1) { 308 os << "Runtime aborting --- recursively, so no thread-specific detail!\n"; 309 return; 310 } 311 gAborting++; 312 os << "Runtime aborting...\n"; 313 if (Runtime::Current() == nullptr) { 314 os << "(Runtime does not yet exist!)\n"; 315 return; 316 } 317 Thread* self = Thread::Current(); 318 if (self == nullptr) { 319 os << "(Aborting thread was not attached to runtime!)\n"; 320 DumpKernelStack(os, GetTid(), " kernel: ", false); 321 DumpNativeStack(os, GetTid(), " native: ", nullptr); 322 } else { 323 os << "Aborting thread:\n"; 324 if (Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)) { 325 DumpThread(os, self); 326 } else { 327 if (Locks::mutator_lock_->SharedTryLock(self)) { 328 DumpThread(os, self); 329 Locks::mutator_lock_->SharedUnlock(self); 330 } 331 } 332 } 333 DumpAllThreads(os, self); 334 } 335 336 // No thread-safety analysis as we do explicitly test for holding the mutator lock. 337 void DumpThread(std::ostream& os, Thread* self) const NO_THREAD_SAFETY_ANALYSIS { 338 DCHECK(Locks::mutator_lock_->IsExclusiveHeld(self) || Locks::mutator_lock_->IsSharedHeld(self)); 339 self->Dump(os); 340 if (self->IsExceptionPending()) { 341 mirror::Throwable* exception = self->GetException(); 342 os << "Pending exception " << exception->Dump(); 343 } 344 } 345 346 void DumpAllThreads(std::ostream& os, Thread* self) const { 347 Runtime* runtime = Runtime::Current(); 348 if (runtime != nullptr) { 349 ThreadList* thread_list = runtime->GetThreadList(); 350 if (thread_list != nullptr) { 351 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self); 352 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self); 353 if (!tll_already_held || !ml_already_held) { 354 os << "Dumping all threads without appropriate locks held:" 355 << (!tll_already_held ? " thread list lock" : "") 356 << (!ml_already_held ? " mutator lock" : "") 357 << "\n"; 358 } 359 os << "All threads:\n"; 360 thread_list->Dump(os); 361 } 362 } 363 } 364}; 365 366void Runtime::Abort() { 367 gAborting++; // set before taking any locks 368 369 // Ensure that we don't have multiple threads trying to abort at once, 370 // which would result in significantly worse diagnostics. 371 MutexLock mu(Thread::Current(), *Locks::abort_lock_); 372 373 // Get any pending output out of the way. 374 fflush(nullptr); 375 376 // Many people have difficulty distinguish aborts from crashes, 377 // so be explicit. 378 AbortState state; 379 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state); 380 381 // Call the abort hook if we have one. 382 if (Runtime::Current() != nullptr && Runtime::Current()->abort_ != nullptr) { 383 LOG(INTERNAL_FATAL) << "Calling abort hook..."; 384 Runtime::Current()->abort_(); 385 // notreached 386 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!"; 387 } 388 389#if defined(__GLIBC__) 390 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3), 391 // which POSIX defines in terms of raise(3), which POSIX defines in terms 392 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through 393 // libpthread, which means the stacks we dump would be useless. Calling 394 // tgkill(2) directly avoids that. 395 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT); 396 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM? 397 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3). 398 exit(1); 399#else 400 abort(); 401#endif 402 // notreached 403} 404 405void Runtime::PreZygoteFork() { 406 heap_->PreZygoteFork(); 407} 408 409void Runtime::CallExitHook(jint status) { 410 if (exit_ != nullptr) { 411 ScopedThreadStateChange tsc(Thread::Current(), kNative); 412 exit_(status); 413 LOG(WARNING) << "Exit hook returned instead of exiting!"; 414 } 415} 416 417void Runtime::SweepSystemWeaks(IsMarkedVisitor* visitor) { 418 GetInternTable()->SweepInternTableWeaks(visitor); 419 GetMonitorList()->SweepMonitorList(visitor); 420 GetJavaVM()->SweepJniWeakGlobals(visitor); 421 GetHeap()->SweepAllocationRecords(visitor); 422 GetLambdaBoxTable()->SweepWeakBoxedLambdas(visitor); 423} 424 425bool Runtime::Create(const RuntimeOptions& options, bool ignore_unrecognized) { 426 // TODO: acquire a static mutex on Runtime to avoid racing. 427 if (Runtime::instance_ != nullptr) { 428 return false; 429 } 430 InitLogging(nullptr); // Calls Locks::Init() as a side effect. 431 instance_ = new Runtime; 432 if (!instance_->Init(options, ignore_unrecognized)) { 433 // TODO: Currently deleting the instance will abort the runtime on destruction. Now This will 434 // leak memory, instead. Fix the destructor. b/19100793. 435 // delete instance_; 436 instance_ = nullptr; 437 return false; 438 } 439 return true; 440} 441 442static jobject CreateSystemClassLoader(Runtime* runtime) { 443 if (runtime->IsAotCompiler() && !runtime->GetCompilerCallbacks()->IsBootImage()) { 444 return nullptr; 445 } 446 447 ScopedObjectAccess soa(Thread::Current()); 448 ClassLinker* cl = Runtime::Current()->GetClassLinker(); 449 auto pointer_size = cl->GetImagePointerSize(); 450 451 StackHandleScope<2> hs(soa.Self()); 452 Handle<mirror::Class> class_loader_class( 453 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader))); 454 CHECK(cl->EnsureInitialized(soa.Self(), class_loader_class, true, true)); 455 456 ArtMethod* getSystemClassLoader = class_loader_class->FindDirectMethod( 457 "getSystemClassLoader", "()Ljava/lang/ClassLoader;", pointer_size); 458 CHECK(getSystemClassLoader != nullptr); 459 460 JValue result = InvokeWithJValues(soa, nullptr, soa.EncodeMethod(getSystemClassLoader), nullptr); 461 JNIEnv* env = soa.Self()->GetJniEnv(); 462 ScopedLocalRef<jobject> system_class_loader(env, soa.AddLocalReference<jobject>(result.GetL())); 463 CHECK(system_class_loader.get() != nullptr); 464 465 soa.Self()->SetClassLoaderOverride(system_class_loader.get()); 466 467 Handle<mirror::Class> thread_class( 468 hs.NewHandle(soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread))); 469 CHECK(cl->EnsureInitialized(soa.Self(), thread_class, true, true)); 470 471 ArtField* contextClassLoader = 472 thread_class->FindDeclaredInstanceField("contextClassLoader", "Ljava/lang/ClassLoader;"); 473 CHECK(contextClassLoader != nullptr); 474 475 // We can't run in a transaction yet. 476 contextClassLoader->SetObject<false>(soa.Self()->GetPeer(), 477 soa.Decode<mirror::ClassLoader*>(system_class_loader.get())); 478 479 return env->NewGlobalRef(system_class_loader.get()); 480} 481 482std::string Runtime::GetPatchoatExecutable() const { 483 if (!patchoat_executable_.empty()) { 484 return patchoat_executable_; 485 } 486 std::string patchoat_executable(GetAndroidRoot()); 487 patchoat_executable += (kIsDebugBuild ? "/bin/patchoatd" : "/bin/patchoat"); 488 return patchoat_executable; 489} 490 491std::string Runtime::GetCompilerExecutable() const { 492 if (!compiler_executable_.empty()) { 493 return compiler_executable_; 494 } 495 std::string compiler_executable(GetAndroidRoot()); 496 compiler_executable += (kIsDebugBuild ? "/bin/dex2oatd" : "/bin/dex2oat"); 497 return compiler_executable; 498} 499 500bool Runtime::Start() { 501 VLOG(startup) << "Runtime::Start entering"; 502 503 CHECK(!no_sig_chain_) << "A started runtime should have sig chain enabled"; 504 505 // If a debug host build, disable ptrace restriction for debugging and test timeout thread dump. 506 // Only 64-bit as prctl() may fail in 32 bit userspace on a 64-bit kernel. 507#if defined(__linux__) && !defined(__ANDROID__) && defined(__x86_64__) 508 if (kIsDebugBuild) { 509 CHECK_EQ(prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY), 0); 510 } 511#endif 512 513 // Restore main thread state to kNative as expected by native code. 514 Thread* self = Thread::Current(); 515 516 self->TransitionFromRunnableToSuspended(kNative); 517 518 started_ = true; 519 520 // Use !IsAotCompiler so that we get test coverage, tests are never the zygote. 521 if (!IsAotCompiler()) { 522 ScopedObjectAccess soa(self); 523 gc::space::ImageSpace* image_space = heap_->GetImageSpace(); 524 if (image_space != nullptr) { 525 ATRACE_BEGIN("AddImageStringsToTable"); 526 GetInternTable()->AddImageStringsToTable(image_space); 527 ATRACE_END(); 528 ATRACE_BEGIN("MoveImageClassesToClassTable"); 529 GetClassLinker()->MoveImageClassesToClassTable(); 530 ATRACE_END(); 531 } 532 } 533 534 // If we are the zygote then we need to wait until after forking to create the code cache 535 // due to SELinux restrictions on r/w/x memory regions. 536 if (!IsZygote() && jit_options_->UseJIT()) { 537 CreateJit(); 538 } 539 540 if (!IsImageDex2OatEnabled() || !GetHeap()->HasImageSpace()) { 541 ScopedObjectAccess soa(self); 542 StackHandleScope<1> hs(soa.Self()); 543 auto klass(hs.NewHandle<mirror::Class>(mirror::Class::GetJavaLangClass())); 544 class_linker_->EnsureInitialized(soa.Self(), klass, true, true); 545 } 546 547 // InitNativeMethods needs to be after started_ so that the classes 548 // it touches will have methods linked to the oat file if necessary. 549 ATRACE_BEGIN("InitNativeMethods"); 550 InitNativeMethods(); 551 ATRACE_END(); 552 553 // Initialize well known thread group values that may be accessed threads while attaching. 554 InitThreadGroups(self); 555 556 Thread::FinishStartup(); 557 558 system_class_loader_ = CreateSystemClassLoader(this); 559 560 if (is_zygote_) { 561 if (!InitZygote()) { 562 return false; 563 } 564 } else { 565 if (is_native_bridge_loaded_) { 566 PreInitializeNativeBridge("."); 567 } 568 DidForkFromZygote(self->GetJniEnv(), NativeBridgeAction::kInitialize, 569 GetInstructionSetString(kRuntimeISA)); 570 } 571 572 ATRACE_BEGIN("StartDaemonThreads"); 573 StartDaemonThreads(); 574 ATRACE_END(); 575 576 { 577 ScopedObjectAccess soa(self); 578 self->GetJniEnv()->locals.AssertEmpty(); 579 } 580 581 VLOG(startup) << "Runtime::Start exiting"; 582 finished_starting_ = true; 583 584 if (profiler_options_.IsEnabled() && !profile_output_filename_.empty()) { 585 // User has asked for a profile using -Xenable-profiler. 586 // Create the profile file if it doesn't exist. 587 int fd = open(profile_output_filename_.c_str(), O_RDWR|O_CREAT|O_EXCL, 0660); 588 if (fd >= 0) { 589 close(fd); 590 } else if (errno != EEXIST) { 591 LOG(INFO) << "Failed to access the profile file. Profiler disabled."; 592 return true; 593 } 594 StartProfiler(profile_output_filename_.c_str()); 595 } 596 597 if (trace_config_.get() != nullptr && trace_config_->trace_file != "") { 598 ScopedThreadStateChange tsc(self, kWaitingForMethodTracingStart); 599 Trace::Start(trace_config_->trace_file.c_str(), 600 -1, 601 static_cast<int>(trace_config_->trace_file_size), 602 0, 603 trace_config_->trace_output_mode, 604 trace_config_->trace_mode, 605 0); 606 } 607 608 return true; 609} 610 611void Runtime::EndThreadBirth() REQUIRES(Locks::runtime_shutdown_lock_) { 612 DCHECK_GT(threads_being_born_, 0U); 613 threads_being_born_--; 614 if (shutting_down_started_ && threads_being_born_ == 0) { 615 shutdown_cond_->Broadcast(Thread::Current()); 616 } 617} 618 619// Do zygote-mode-only initialization. 620bool Runtime::InitZygote() { 621#ifdef __linux__ 622 // zygote goes into its own process group 623 setpgid(0, 0); 624 625 // See storage config details at http://source.android.com/tech/storage/ 626 // Create private mount namespace shared by all children 627 if (unshare(CLONE_NEWNS) == -1) { 628 PLOG(ERROR) << "Failed to unshare()"; 629 return false; 630 } 631 632 // Mark rootfs as being a slave so that changes from default 633 // namespace only flow into our children. 634 if (mount("rootfs", "/", nullptr, (MS_SLAVE | MS_REC), nullptr) == -1) { 635 PLOG(ERROR) << "Failed to mount() rootfs as MS_SLAVE"; 636 return false; 637 } 638 639 // Create a staging tmpfs that is shared by our children; they will 640 // bind mount storage into their respective private namespaces, which 641 // are isolated from each other. 642 const char* target_base = getenv("EMULATED_STORAGE_TARGET"); 643 if (target_base != nullptr) { 644 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV, 645 "uid=0,gid=1028,mode=0751") == -1) { 646 PLOG(ERROR) << "Failed to mount tmpfs to " << target_base; 647 return false; 648 } 649 } 650 651 return true; 652#else 653 UNIMPLEMENTED(FATAL); 654 return false; 655#endif 656} 657 658void Runtime::DidForkFromZygote(JNIEnv* env, NativeBridgeAction action, const char* isa) { 659 is_zygote_ = false; 660 661 if (is_native_bridge_loaded_) { 662 switch (action) { 663 case NativeBridgeAction::kUnload: 664 UnloadNativeBridge(); 665 is_native_bridge_loaded_ = false; 666 break; 667 668 case NativeBridgeAction::kInitialize: 669 InitializeNativeBridge(env, isa); 670 break; 671 } 672 } 673 674 // Create the thread pools. 675 heap_->CreateThreadPool(); 676 // Reset the gc performance data at zygote fork so that the GCs 677 // before fork aren't attributed to an app. 678 heap_->ResetGcPerformanceInfo(); 679 680 if (jit_.get() == nullptr && jit_options_->UseJIT()) { 681 // Create the JIT if the flag is set and we haven't already create it (happens for run-tests). 682 CreateJit(); 683 } 684 685 StartSignalCatcher(); 686 687 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y", 688 // this will pause the runtime, so we probably want this to come last. 689 Dbg::StartJdwp(); 690} 691 692void Runtime::StartSignalCatcher() { 693 if (!is_zygote_) { 694 signal_catcher_ = new SignalCatcher(stack_trace_file_); 695 } 696} 697 698bool Runtime::IsShuttingDown(Thread* self) { 699 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 700 return IsShuttingDownLocked(); 701} 702 703bool Runtime::IsDebuggable() const { 704 const OatFile* oat_file = GetOatFileManager().GetPrimaryOatFile(); 705 return oat_file != nullptr && oat_file->IsDebuggable(); 706} 707 708void Runtime::StartDaemonThreads() { 709 VLOG(startup) << "Runtime::StartDaemonThreads entering"; 710 711 Thread* self = Thread::Current(); 712 713 // Must be in the kNative state for calling native methods. 714 CHECK_EQ(self->GetState(), kNative); 715 716 JNIEnv* env = self->GetJniEnv(); 717 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 718 WellKnownClasses::java_lang_Daemons_start); 719 if (env->ExceptionCheck()) { 720 env->ExceptionDescribe(); 721 LOG(FATAL) << "Error starting java.lang.Daemons"; 722 } 723 724 VLOG(startup) << "Runtime::StartDaemonThreads exiting"; 725} 726 727static bool OpenDexFilesFromImage(const std::string& image_location, 728 std::vector<std::unique_ptr<const DexFile>>* dex_files, 729 size_t* failures) { 730 DCHECK(dex_files != nullptr) << "OpenDexFilesFromImage: out-param is nullptr"; 731 std::string system_filename; 732 bool has_system = false; 733 std::string cache_filename_unused; 734 bool dalvik_cache_exists_unused; 735 bool has_cache_unused; 736 bool is_global_cache_unused; 737 bool found_image = gc::space::ImageSpace::FindImageFilename(image_location.c_str(), 738 kRuntimeISA, 739 &system_filename, 740 &has_system, 741 &cache_filename_unused, 742 &dalvik_cache_exists_unused, 743 &has_cache_unused, 744 &is_global_cache_unused); 745 *failures = 0; 746 if (!found_image || !has_system) { 747 return false; 748 } 749 std::string error_msg; 750 // We are falling back to non-executable use of the oat file because patching failed, presumably 751 // due to lack of space. 752 std::string oat_filename = ImageHeader::GetOatLocationFromImageLocation(system_filename.c_str()); 753 std::string oat_location = ImageHeader::GetOatLocationFromImageLocation(image_location.c_str()); 754 std::unique_ptr<File> file(OS::OpenFileForReading(oat_filename.c_str())); 755 if (file.get() == nullptr) { 756 return false; 757 } 758 std::unique_ptr<ElfFile> elf_file(ElfFile::Open(file.release(), false, false, &error_msg)); 759 if (elf_file.get() == nullptr) { 760 return false; 761 } 762 std::unique_ptr<const OatFile> oat_file( 763 OatFile::OpenWithElfFile(elf_file.release(), oat_location, nullptr, &error_msg)); 764 if (oat_file == nullptr) { 765 LOG(INFO) << "Unable to use '" << oat_filename << "' because " << error_msg; 766 return false; 767 } 768 769 for (const OatFile::OatDexFile* oat_dex_file : oat_file->GetOatDexFiles()) { 770 if (oat_dex_file == nullptr) { 771 *failures += 1; 772 continue; 773 } 774 std::unique_ptr<const DexFile> dex_file = oat_dex_file->OpenDexFile(&error_msg); 775 if (dex_file.get() == nullptr) { 776 *failures += 1; 777 } else { 778 dex_files->push_back(std::move(dex_file)); 779 } 780 } 781 Runtime::Current()->GetOatFileManager().RegisterOatFile(std::move(oat_file)); 782 return true; 783} 784 785 786static size_t OpenDexFiles(const std::vector<std::string>& dex_filenames, 787 const std::vector<std::string>& dex_locations, 788 const std::string& image_location, 789 std::vector<std::unique_ptr<const DexFile>>* dex_files) { 790 DCHECK(dex_files != nullptr) << "OpenDexFiles: out-param is nullptr"; 791 size_t failure_count = 0; 792 if (!image_location.empty() && OpenDexFilesFromImage(image_location, dex_files, &failure_count)) { 793 return failure_count; 794 } 795 failure_count = 0; 796 for (size_t i = 0; i < dex_filenames.size(); i++) { 797 const char* dex_filename = dex_filenames[i].c_str(); 798 const char* dex_location = dex_locations[i].c_str(); 799 std::string error_msg; 800 if (!OS::FileExists(dex_filename)) { 801 LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'"; 802 continue; 803 } 804 if (!DexFile::Open(dex_filename, dex_location, &error_msg, dex_files)) { 805 LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg; 806 ++failure_count; 807 } 808 } 809 return failure_count; 810} 811 812void Runtime::SetSentinel(mirror::Object* sentinel) { 813 CHECK(sentinel_.Read() == nullptr); 814 CHECK(sentinel != nullptr); 815 sentinel_ = GcRoot<mirror::Object>(sentinel); 816} 817 818bool Runtime::Init(const RuntimeOptions& raw_options, bool ignore_unrecognized) { 819 ATRACE_BEGIN("Runtime::Init"); 820 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize); 821 822 MemMap::Init(); 823 824 using Opt = RuntimeArgumentMap; 825 RuntimeArgumentMap runtime_options; 826 std::unique_ptr<ParsedOptions> parsed_options( 827 ParsedOptions::Create(raw_options, ignore_unrecognized, &runtime_options)); 828 if (parsed_options.get() == nullptr) { 829 LOG(ERROR) << "Failed to parse options"; 830 ATRACE_END(); 831 return false; 832 } 833 VLOG(startup) << "Runtime::Init -verbose:startup enabled"; 834 835 QuasiAtomic::Startup(); 836 837 oat_file_manager_.reset(new OatFileManager); 838 839 Monitor::Init(runtime_options.GetOrDefault(Opt::LockProfThreshold), 840 runtime_options.GetOrDefault(Opt::HookIsSensitiveThread)); 841 842 boot_class_path_string_ = runtime_options.ReleaseOrDefault(Opt::BootClassPath); 843 class_path_string_ = runtime_options.ReleaseOrDefault(Opt::ClassPath); 844 properties_ = runtime_options.ReleaseOrDefault(Opt::PropertiesList); 845 846 compiler_callbacks_ = runtime_options.GetOrDefault(Opt::CompilerCallbacksPtr); 847 patchoat_executable_ = runtime_options.ReleaseOrDefault(Opt::PatchOat); 848 must_relocate_ = runtime_options.GetOrDefault(Opt::Relocate); 849 is_zygote_ = runtime_options.Exists(Opt::Zygote); 850 is_explicit_gc_disabled_ = runtime_options.Exists(Opt::DisableExplicitGC); 851 dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::Dex2Oat); 852 image_dex2oat_enabled_ = runtime_options.GetOrDefault(Opt::ImageDex2Oat); 853 854 vfprintf_ = runtime_options.GetOrDefault(Opt::HookVfprintf); 855 exit_ = runtime_options.GetOrDefault(Opt::HookExit); 856 abort_ = runtime_options.GetOrDefault(Opt::HookAbort); 857 858 default_stack_size_ = runtime_options.GetOrDefault(Opt::StackSize); 859 stack_trace_file_ = runtime_options.ReleaseOrDefault(Opt::StackTraceFile); 860 861 compiler_executable_ = runtime_options.ReleaseOrDefault(Opt::Compiler); 862 compiler_options_ = runtime_options.ReleaseOrDefault(Opt::CompilerOptions); 863 image_compiler_options_ = runtime_options.ReleaseOrDefault(Opt::ImageCompilerOptions); 864 image_location_ = runtime_options.GetOrDefault(Opt::Image); 865 866 max_spins_before_thin_lock_inflation_ = 867 runtime_options.GetOrDefault(Opt::MaxSpinsBeforeThinLockInflation); 868 869 monitor_list_ = new MonitorList; 870 monitor_pool_ = MonitorPool::Create(); 871 thread_list_ = new ThreadList; 872 intern_table_ = new InternTable; 873 874 verify_ = runtime_options.GetOrDefault(Opt::Verify); 875 allow_dex_file_fallback_ = !runtime_options.Exists(Opt::NoDexFileFallback); 876 877 no_sig_chain_ = runtime_options.Exists(Opt::NoSigChain); 878 879 Split(runtime_options.GetOrDefault(Opt::CpuAbiList), ',', &cpu_abilist_); 880 881 fingerprint_ = runtime_options.ReleaseOrDefault(Opt::Fingerprint); 882 883 if (runtime_options.GetOrDefault(Opt::Interpret)) { 884 GetInstrumentation()->ForceInterpretOnly(); 885 } 886 887 zygote_max_failed_boots_ = runtime_options.GetOrDefault(Opt::ZygoteMaxFailedBoots); 888 experimental_flags_ = runtime_options.GetOrDefault(Opt::Experimental); 889 890 XGcOption xgc_option = runtime_options.GetOrDefault(Opt::GcOption); 891 ATRACE_BEGIN("CreateHeap"); 892 heap_ = new gc::Heap(runtime_options.GetOrDefault(Opt::MemoryInitialSize), 893 runtime_options.GetOrDefault(Opt::HeapGrowthLimit), 894 runtime_options.GetOrDefault(Opt::HeapMinFree), 895 runtime_options.GetOrDefault(Opt::HeapMaxFree), 896 runtime_options.GetOrDefault(Opt::HeapTargetUtilization), 897 runtime_options.GetOrDefault(Opt::ForegroundHeapGrowthMultiplier), 898 runtime_options.GetOrDefault(Opt::MemoryMaximumSize), 899 runtime_options.GetOrDefault(Opt::NonMovingSpaceCapacity), 900 runtime_options.GetOrDefault(Opt::Image), 901 runtime_options.GetOrDefault(Opt::ImageInstructionSet), 902 xgc_option.collector_type_, 903 runtime_options.GetOrDefault(Opt::BackgroundGc), 904 runtime_options.GetOrDefault(Opt::LargeObjectSpace), 905 runtime_options.GetOrDefault(Opt::LargeObjectThreshold), 906 runtime_options.GetOrDefault(Opt::ParallelGCThreads), 907 runtime_options.GetOrDefault(Opt::ConcGCThreads), 908 runtime_options.Exists(Opt::LowMemoryMode), 909 runtime_options.GetOrDefault(Opt::LongPauseLogThreshold), 910 runtime_options.GetOrDefault(Opt::LongGCLogThreshold), 911 runtime_options.Exists(Opt::IgnoreMaxFootprint), 912 runtime_options.GetOrDefault(Opt::UseTLAB), 913 xgc_option.verify_pre_gc_heap_, 914 xgc_option.verify_pre_sweeping_heap_, 915 xgc_option.verify_post_gc_heap_, 916 xgc_option.verify_pre_gc_rosalloc_, 917 xgc_option.verify_pre_sweeping_rosalloc_, 918 xgc_option.verify_post_gc_rosalloc_, 919 xgc_option.gcstress_, 920 runtime_options.GetOrDefault(Opt::EnableHSpaceCompactForOOM), 921 runtime_options.GetOrDefault(Opt::HSpaceCompactForOOMMinIntervalsMs)); 922 ATRACE_END(); 923 924 if (heap_->GetImageSpace() == nullptr && !allow_dex_file_fallback_) { 925 LOG(ERROR) << "Dex file fallback disabled, cannot continue without image."; 926 ATRACE_END(); 927 return false; 928 } 929 930 dump_gc_performance_on_shutdown_ = runtime_options.Exists(Opt::DumpGCPerformanceOnShutdown); 931 932 if (runtime_options.Exists(Opt::JdwpOptions)) { 933 Dbg::ConfigureJdwp(runtime_options.GetOrDefault(Opt::JdwpOptions)); 934 } 935 936 jit_options_.reset(jit::JitOptions::CreateFromRuntimeArguments(runtime_options)); 937 if (IsAotCompiler()) { 938 // If we are already the compiler at this point, we must be dex2oat. Don't create the jit in 939 // this case. 940 // If runtime_options doesn't have UseJIT set to true then CreateFromRuntimeArguments returns 941 // null and we don't create the jit. 942 jit_options_->SetUseJIT(false); 943 } 944 945 // Allocate a global table of boxed lambda objects <-> closures. 946 lambda_box_table_ = MakeUnique<lambda::BoxTable>(); 947 948 // Use MemMap arena pool for jit, malloc otherwise. Malloc arenas are faster to allocate but 949 // can't be trimmed as easily. 950 const bool use_malloc = IsAotCompiler(); 951 arena_pool_.reset(new ArenaPool(use_malloc, false)); 952 if (IsAotCompiler() && Is64BitInstructionSet(kRuntimeISA)) { 953 // 4gb, no malloc. Explanation in header. 954 low_4gb_arena_pool_.reset(new ArenaPool(false, true)); 955 } 956 linear_alloc_.reset(CreateLinearAlloc()); 957 958 BlockSignals(); 959 InitPlatformSignalHandlers(); 960 961 // Change the implicit checks flags based on runtime architecture. 962 switch (kRuntimeISA) { 963 case kArm: 964 case kThumb2: 965 case kX86: 966 case kArm64: 967 case kX86_64: 968 case kMips: 969 case kMips64: 970 implicit_null_checks_ = true; 971 // Installing stack protection does not play well with valgrind. 972 implicit_so_checks_ = !(RUNNING_ON_MEMORY_TOOL && kMemoryToolIsValgrind); 973 break; 974 default: 975 // Keep the defaults. 976 break; 977 } 978 979 if (!no_sig_chain_) { 980 // Dex2Oat's Runtime does not need the signal chain or the fault handler. 981 982 // Initialize the signal chain so that any calls to sigaction get 983 // correctly routed to the next in the chain regardless of whether we 984 // have claimed the signal or not. 985 InitializeSignalChain(); 986 987 if (implicit_null_checks_ || implicit_so_checks_ || implicit_suspend_checks_) { 988 fault_manager.Init(); 989 990 // These need to be in a specific order. The null point check handler must be 991 // after the suspend check and stack overflow check handlers. 992 // 993 // Note: the instances attach themselves to the fault manager and are handled by it. The manager 994 // will delete the instance on Shutdown(). 995 if (implicit_suspend_checks_) { 996 new SuspensionHandler(&fault_manager); 997 } 998 999 if (implicit_so_checks_) { 1000 new StackOverflowHandler(&fault_manager); 1001 } 1002 1003 if (implicit_null_checks_) { 1004 new NullPointerHandler(&fault_manager); 1005 } 1006 1007 if (kEnableJavaStackTraceHandler) { 1008 new JavaStackTraceHandler(&fault_manager); 1009 } 1010 } 1011 } 1012 1013 java_vm_ = new JavaVMExt(this, runtime_options); 1014 1015 Thread::Startup(); 1016 1017 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating 1018 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main 1019 // thread, we do not get a java peer. 1020 Thread* self = Thread::Attach("main", false, nullptr, false); 1021 CHECK_EQ(self->GetThreadId(), ThreadList::kMainThreadId); 1022 CHECK(self != nullptr); 1023 1024 // Set us to runnable so tools using a runtime can allocate and GC by default 1025 self->TransitionFromSuspendedToRunnable(); 1026 1027 // Now we're attached, we can take the heap locks and validate the heap. 1028 GetHeap()->EnableObjectValidation(); 1029 1030 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U); 1031 class_linker_ = new ClassLinker(intern_table_); 1032 if (GetHeap()->HasImageSpace()) { 1033 ATRACE_BEGIN("InitFromImage"); 1034 class_linker_->InitFromImage(); 1035 ATRACE_END(); 1036 if (kIsDebugBuild) { 1037 GetHeap()->GetImageSpace()->VerifyImageAllocations(); 1038 } 1039 if (boot_class_path_string_.empty()) { 1040 // The bootclasspath is not explicitly specified: construct it from the loaded dex files. 1041 const std::vector<const DexFile*>& boot_class_path = GetClassLinker()->GetBootClassPath(); 1042 std::vector<std::string> dex_locations; 1043 dex_locations.reserve(boot_class_path.size()); 1044 for (const DexFile* dex_file : boot_class_path) { 1045 dex_locations.push_back(dex_file->GetLocation()); 1046 } 1047 boot_class_path_string_ = Join(dex_locations, ':'); 1048 } 1049 } else { 1050 std::vector<std::string> dex_filenames; 1051 Split(boot_class_path_string_, ':', &dex_filenames); 1052 1053 std::vector<std::string> dex_locations; 1054 if (!runtime_options.Exists(Opt::BootClassPathLocations)) { 1055 dex_locations = dex_filenames; 1056 } else { 1057 dex_locations = runtime_options.GetOrDefault(Opt::BootClassPathLocations); 1058 CHECK_EQ(dex_filenames.size(), dex_locations.size()); 1059 } 1060 1061 std::vector<std::unique_ptr<const DexFile>> boot_class_path; 1062 OpenDexFiles(dex_filenames, 1063 dex_locations, 1064 runtime_options.GetOrDefault(Opt::Image), 1065 &boot_class_path); 1066 instruction_set_ = runtime_options.GetOrDefault(Opt::ImageInstructionSet); 1067 class_linker_->InitWithoutImage(std::move(boot_class_path)); 1068 1069 // TODO: Should we move the following to InitWithoutImage? 1070 SetInstructionSet(instruction_set_); 1071 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1072 Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i); 1073 if (!HasCalleeSaveMethod(type)) { 1074 SetCalleeSaveMethod(CreateCalleeSaveMethod(), type); 1075 } 1076 } 1077 } 1078 1079 CHECK(class_linker_ != nullptr); 1080 1081 verifier::MethodVerifier::Init(); 1082 1083 if (runtime_options.Exists(Opt::MethodTrace)) { 1084 trace_config_.reset(new TraceConfig()); 1085 trace_config_->trace_file = runtime_options.ReleaseOrDefault(Opt::MethodTraceFile); 1086 trace_config_->trace_file_size = runtime_options.ReleaseOrDefault(Opt::MethodTraceFileSize); 1087 trace_config_->trace_mode = Trace::TraceMode::kMethodTracing; 1088 trace_config_->trace_output_mode = runtime_options.Exists(Opt::MethodTraceStreaming) ? 1089 Trace::TraceOutputMode::kStreaming : 1090 Trace::TraceOutputMode::kFile; 1091 } 1092 1093 { 1094 auto&& profiler_options = runtime_options.ReleaseOrDefault(Opt::ProfilerOpts); 1095 profile_output_filename_ = profiler_options.output_file_name_; 1096 1097 // TODO: Don't do this, just change ProfilerOptions to include the output file name? 1098 ProfilerOptions other_options( 1099 profiler_options.enabled_, 1100 profiler_options.period_s_, 1101 profiler_options.duration_s_, 1102 profiler_options.interval_us_, 1103 profiler_options.backoff_coefficient_, 1104 profiler_options.start_immediately_, 1105 profiler_options.top_k_threshold_, 1106 profiler_options.top_k_change_threshold_, 1107 profiler_options.profile_type_, 1108 profiler_options.max_stack_depth_); 1109 1110 profiler_options_ = other_options; 1111 } 1112 1113 // TODO: move this to just be an Trace::Start argument 1114 Trace::SetDefaultClockSource(runtime_options.GetOrDefault(Opt::ProfileClock)); 1115 1116 // Pre-allocate an OutOfMemoryError for the double-OOME case. 1117 self->ThrowNewException("Ljava/lang/OutOfMemoryError;", 1118 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; " 1119 "no stack trace available"); 1120 pre_allocated_OutOfMemoryError_ = GcRoot<mirror::Throwable>(self->GetException()); 1121 self->ClearException(); 1122 1123 // Pre-allocate a NoClassDefFoundError for the common case of failing to find a system class 1124 // ahead of checking the application's class loader. 1125 self->ThrowNewException("Ljava/lang/NoClassDefFoundError;", 1126 "Class not found using the boot class loader; no stack trace available"); 1127 pre_allocated_NoClassDefFoundError_ = GcRoot<mirror::Throwable>(self->GetException()); 1128 self->ClearException(); 1129 1130 // Look for a native bridge. 1131 // 1132 // The intended flow here is, in the case of a running system: 1133 // 1134 // Runtime::Init() (zygote): 1135 // LoadNativeBridge -> dlopen from cmd line parameter. 1136 // | 1137 // V 1138 // Runtime::Start() (zygote): 1139 // No-op wrt native bridge. 1140 // | 1141 // | start app 1142 // V 1143 // DidForkFromZygote(action) 1144 // action = kUnload -> dlclose native bridge. 1145 // action = kInitialize -> initialize library 1146 // 1147 // 1148 // The intended flow here is, in the case of a simple dalvikvm call: 1149 // 1150 // Runtime::Init(): 1151 // LoadNativeBridge -> dlopen from cmd line parameter. 1152 // | 1153 // V 1154 // Runtime::Start(): 1155 // DidForkFromZygote(kInitialize) -> try to initialize any native bridge given. 1156 // No-op wrt native bridge. 1157 { 1158 std::string native_bridge_file_name = runtime_options.ReleaseOrDefault(Opt::NativeBridge); 1159 is_native_bridge_loaded_ = LoadNativeBridge(native_bridge_file_name); 1160 } 1161 1162 VLOG(startup) << "Runtime::Init exiting"; 1163 1164 ATRACE_END(); 1165 1166 return true; 1167} 1168 1169void Runtime::InitNativeMethods() { 1170 VLOG(startup) << "Runtime::InitNativeMethods entering"; 1171 Thread* self = Thread::Current(); 1172 JNIEnv* env = self->GetJniEnv(); 1173 1174 // Must be in the kNative state for calling native methods (JNI_OnLoad code). 1175 CHECK_EQ(self->GetState(), kNative); 1176 1177 // First set up JniConstants, which is used by both the runtime's built-in native 1178 // methods and libcore. 1179 JniConstants::init(env); 1180 WellKnownClasses::Init(env); 1181 1182 // Then set up the native methods provided by the runtime itself. 1183 RegisterRuntimeNativeMethods(env); 1184 1185 // Then set up libcore, which is just a regular JNI library with a regular JNI_OnLoad. 1186 // Most JNI libraries can just use System.loadLibrary, but libcore can't because it's 1187 // the library that implements System.loadLibrary! 1188 { 1189 std::string reason; 1190 if (!java_vm_->LoadNativeLibrary(env, "libjavacore.so", nullptr, &reason)) { 1191 LOG(FATAL) << "LoadNativeLibrary failed for \"libjavacore.so\": " << reason; 1192 } 1193 } 1194 1195 // Initialize well known classes that may invoke runtime native methods. 1196 WellKnownClasses::LateInit(env); 1197 1198 VLOG(startup) << "Runtime::InitNativeMethods exiting"; 1199} 1200 1201void Runtime::InitThreadGroups(Thread* self) { 1202 JNIEnvExt* env = self->GetJniEnv(); 1203 ScopedJniEnvLocalRefState env_state(env); 1204 main_thread_group_ = 1205 env->NewGlobalRef(env->GetStaticObjectField( 1206 WellKnownClasses::java_lang_ThreadGroup, 1207 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup)); 1208 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1209 system_thread_group_ = 1210 env->NewGlobalRef(env->GetStaticObjectField( 1211 WellKnownClasses::java_lang_ThreadGroup, 1212 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup)); 1213 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1214} 1215 1216jobject Runtime::GetMainThreadGroup() const { 1217 CHECK(main_thread_group_ != nullptr || IsAotCompiler()); 1218 return main_thread_group_; 1219} 1220 1221jobject Runtime::GetSystemThreadGroup() const { 1222 CHECK(system_thread_group_ != nullptr || IsAotCompiler()); 1223 return system_thread_group_; 1224} 1225 1226jobject Runtime::GetSystemClassLoader() const { 1227 CHECK(system_class_loader_ != nullptr || IsAotCompiler()); 1228 return system_class_loader_; 1229} 1230 1231void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) { 1232 register_dalvik_system_DexFile(env); 1233 register_dalvik_system_VMDebug(env); 1234 register_dalvik_system_VMRuntime(env); 1235 register_dalvik_system_VMStack(env); 1236 register_dalvik_system_ZygoteHooks(env); 1237 register_java_lang_Class(env); 1238 register_java_lang_DexCache(env); 1239 register_java_lang_Object(env); 1240 register_java_lang_ref_FinalizerReference(env); 1241 register_java_lang_reflect_Array(env); 1242 register_java_lang_reflect_Constructor(env); 1243 register_java_lang_reflect_Field(env); 1244 register_java_lang_reflect_Method(env); 1245 register_java_lang_reflect_Proxy(env); 1246 register_java_lang_ref_Reference(env); 1247 register_java_lang_Runtime(env); 1248 register_java_lang_String(env); 1249 register_java_lang_StringFactory(env); 1250 register_java_lang_System(env); 1251 register_java_lang_Thread(env); 1252 register_java_lang_Throwable(env); 1253 register_java_lang_VMClassLoader(env); 1254 register_java_util_concurrent_atomic_AtomicLong(env); 1255 register_libcore_util_CharsetUtils(env); 1256 register_org_apache_harmony_dalvik_ddmc_DdmServer(env); 1257 register_org_apache_harmony_dalvik_ddmc_DdmVmInternal(env); 1258 register_sun_misc_Unsafe(env); 1259} 1260 1261void Runtime::DumpForSigQuit(std::ostream& os) { 1262 GetClassLinker()->DumpForSigQuit(os); 1263 GetInternTable()->DumpForSigQuit(os); 1264 GetJavaVM()->DumpForSigQuit(os); 1265 GetHeap()->DumpForSigQuit(os); 1266 TrackedAllocators::Dump(os); 1267 os << "\n"; 1268 1269 thread_list_->DumpForSigQuit(os); 1270 BaseMutex::DumpAll(os); 1271} 1272 1273void Runtime::DumpLockHolders(std::ostream& os) { 1274 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid(); 1275 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner(); 1276 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner(); 1277 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner(); 1278 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) { 1279 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n" 1280 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n" 1281 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n" 1282 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n"; 1283 } 1284} 1285 1286void Runtime::SetStatsEnabled(bool new_state) { 1287 Thread* self = Thread::Current(); 1288 MutexLock mu(self, *Locks::instrument_entrypoints_lock_); 1289 if (new_state == true) { 1290 GetStats()->Clear(~0); 1291 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1292 self->GetStats()->Clear(~0); 1293 if (stats_enabled_ != new_state) { 1294 GetInstrumentation()->InstrumentQuickAllocEntryPointsLocked(); 1295 } 1296 } else if (stats_enabled_ != new_state) { 1297 GetInstrumentation()->UninstrumentQuickAllocEntryPointsLocked(); 1298 } 1299 stats_enabled_ = new_state; 1300} 1301 1302void Runtime::ResetStats(int kinds) { 1303 GetStats()->Clear(kinds & 0xffff); 1304 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1305 Thread::Current()->GetStats()->Clear(kinds >> 16); 1306} 1307 1308int32_t Runtime::GetStat(int kind) { 1309 RuntimeStats* stats; 1310 if (kind < (1<<16)) { 1311 stats = GetStats(); 1312 } else { 1313 stats = Thread::Current()->GetStats(); 1314 kind >>= 16; 1315 } 1316 switch (kind) { 1317 case KIND_ALLOCATED_OBJECTS: 1318 return stats->allocated_objects; 1319 case KIND_ALLOCATED_BYTES: 1320 return stats->allocated_bytes; 1321 case KIND_FREED_OBJECTS: 1322 return stats->freed_objects; 1323 case KIND_FREED_BYTES: 1324 return stats->freed_bytes; 1325 case KIND_GC_INVOCATIONS: 1326 return stats->gc_for_alloc_count; 1327 case KIND_CLASS_INIT_COUNT: 1328 return stats->class_init_count; 1329 case KIND_CLASS_INIT_TIME: 1330 // Convert ns to us, reduce to 32 bits. 1331 return static_cast<int>(stats->class_init_time_ns / 1000); 1332 case KIND_EXT_ALLOCATED_OBJECTS: 1333 case KIND_EXT_ALLOCATED_BYTES: 1334 case KIND_EXT_FREED_OBJECTS: 1335 case KIND_EXT_FREED_BYTES: 1336 return 0; // backward compatibility 1337 default: 1338 LOG(FATAL) << "Unknown statistic " << kind; 1339 return -1; // unreachable 1340 } 1341} 1342 1343void Runtime::BlockSignals() { 1344 SignalSet signals; 1345 signals.Add(SIGPIPE); 1346 // SIGQUIT is used to dump the runtime's state (including stack traces). 1347 signals.Add(SIGQUIT); 1348 // SIGUSR1 is used to initiate a GC. 1349 signals.Add(SIGUSR1); 1350 signals.Block(); 1351} 1352 1353bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 1354 bool create_peer) { 1355 return Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != nullptr; 1356} 1357 1358void Runtime::DetachCurrentThread() { 1359 Thread* self = Thread::Current(); 1360 if (self == nullptr) { 1361 LOG(FATAL) << "attempting to detach thread that is not attached"; 1362 } 1363 if (self->HasManagedStack()) { 1364 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code"; 1365 } 1366 thread_list_->Unregister(self); 1367} 1368 1369mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() { 1370 mirror::Throwable* oome = pre_allocated_OutOfMemoryError_.Read(); 1371 if (oome == nullptr) { 1372 LOG(ERROR) << "Failed to return pre-allocated OOME"; 1373 } 1374 return oome; 1375} 1376 1377mirror::Throwable* Runtime::GetPreAllocatedNoClassDefFoundError() { 1378 mirror::Throwable* ncdfe = pre_allocated_NoClassDefFoundError_.Read(); 1379 if (ncdfe == nullptr) { 1380 LOG(ERROR) << "Failed to return pre-allocated NoClassDefFoundError"; 1381 } 1382 return ncdfe; 1383} 1384 1385void Runtime::VisitConstantRoots(RootVisitor* visitor) { 1386 // Visit the classes held as static in mirror classes, these can be visited concurrently and only 1387 // need to be visited once per GC since they never change. 1388 mirror::Class::VisitRoots(visitor); 1389 mirror::Constructor::VisitRoots(visitor); 1390 mirror::Reference::VisitRoots(visitor); 1391 mirror::Method::VisitRoots(visitor); 1392 mirror::StackTraceElement::VisitRoots(visitor); 1393 mirror::String::VisitRoots(visitor); 1394 mirror::Throwable::VisitRoots(visitor); 1395 mirror::Field::VisitRoots(visitor); 1396 // Visit all the primitive array types classes. 1397 mirror::PrimitiveArray<uint8_t>::VisitRoots(visitor); // BooleanArray 1398 mirror::PrimitiveArray<int8_t>::VisitRoots(visitor); // ByteArray 1399 mirror::PrimitiveArray<uint16_t>::VisitRoots(visitor); // CharArray 1400 mirror::PrimitiveArray<double>::VisitRoots(visitor); // DoubleArray 1401 mirror::PrimitiveArray<float>::VisitRoots(visitor); // FloatArray 1402 mirror::PrimitiveArray<int32_t>::VisitRoots(visitor); // IntArray 1403 mirror::PrimitiveArray<int64_t>::VisitRoots(visitor); // LongArray 1404 mirror::PrimitiveArray<int16_t>::VisitRoots(visitor); // ShortArray 1405 // Visiting the roots of these ArtMethods is not currently required since all the GcRoots are 1406 // null. 1407 BufferedRootVisitor<16> buffered_visitor(visitor, RootInfo(kRootVMInternal)); 1408 const size_t pointer_size = GetClassLinker()->GetImagePointerSize(); 1409 if (HasResolutionMethod()) { 1410 resolution_method_->VisitRoots(buffered_visitor, pointer_size); 1411 } 1412 if (HasImtConflictMethod()) { 1413 imt_conflict_method_->VisitRoots(buffered_visitor, pointer_size); 1414 } 1415 if (imt_unimplemented_method_ != nullptr) { 1416 imt_unimplemented_method_->VisitRoots(buffered_visitor, pointer_size); 1417 } 1418 for (size_t i = 0; i < kLastCalleeSaveType; ++i) { 1419 auto* m = reinterpret_cast<ArtMethod*>(callee_save_methods_[i]); 1420 if (m != nullptr) { 1421 m->VisitRoots(buffered_visitor, pointer_size); 1422 } 1423 } 1424} 1425 1426void Runtime::VisitConcurrentRoots(RootVisitor* visitor, VisitRootFlags flags) { 1427 intern_table_->VisitRoots(visitor, flags); 1428 class_linker_->VisitRoots(visitor, flags); 1429 heap_->VisitAllocationRecords(visitor); 1430 if ((flags & kVisitRootFlagNewRoots) == 0) { 1431 // Guaranteed to have no new roots in the constant roots. 1432 VisitConstantRoots(visitor); 1433 } 1434 Dbg::VisitRoots(visitor); 1435} 1436 1437void Runtime::VisitTransactionRoots(RootVisitor* visitor) { 1438 if (preinitialization_transaction_ != nullptr) { 1439 preinitialization_transaction_->VisitRoots(visitor); 1440 } 1441} 1442 1443void Runtime::VisitNonThreadRoots(RootVisitor* visitor) { 1444 java_vm_->VisitRoots(visitor); 1445 sentinel_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1446 pre_allocated_OutOfMemoryError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1447 pre_allocated_NoClassDefFoundError_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal)); 1448 verifier::MethodVerifier::VisitStaticRoots(visitor); 1449 VisitTransactionRoots(visitor); 1450} 1451 1452void Runtime::VisitNonConcurrentRoots(RootVisitor* visitor) { 1453 thread_list_->VisitRoots(visitor); 1454 VisitNonThreadRoots(visitor); 1455} 1456 1457void Runtime::VisitThreadRoots(RootVisitor* visitor) { 1458 thread_list_->VisitRoots(visitor); 1459} 1460 1461size_t Runtime::FlipThreadRoots(Closure* thread_flip_visitor, Closure* flip_callback, 1462 gc::collector::GarbageCollector* collector) { 1463 return thread_list_->FlipThreadRoots(thread_flip_visitor, flip_callback, collector); 1464} 1465 1466void Runtime::VisitRoots(RootVisitor* visitor, VisitRootFlags flags) { 1467 VisitNonConcurrentRoots(visitor); 1468 VisitConcurrentRoots(visitor, flags); 1469} 1470 1471void Runtime::VisitImageRoots(RootVisitor* visitor) { 1472 for (auto* space : GetHeap()->GetContinuousSpaces()) { 1473 if (space->IsImageSpace()) { 1474 auto* image_space = space->AsImageSpace(); 1475 const auto& image_header = image_space->GetImageHeader(); 1476 for (size_t i = 0; i < ImageHeader::kImageRootsMax; ++i) { 1477 auto* obj = image_header.GetImageRoot(static_cast<ImageHeader::ImageRoot>(i)); 1478 if (obj != nullptr) { 1479 auto* after_obj = obj; 1480 visitor->VisitRoot(&after_obj, RootInfo(kRootStickyClass)); 1481 CHECK_EQ(after_obj, obj); 1482 } 1483 } 1484 } 1485 } 1486} 1487 1488ArtMethod* Runtime::CreateImtConflictMethod() { 1489 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 1490 // When compiling, the code pointer will get set later when the image is loaded. 1491 if (IsAotCompiler()) { 1492 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1493 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1494 } else { 1495 method->SetEntryPointFromQuickCompiledCode(GetQuickImtConflictStub()); 1496 } 1497 return method; 1498} 1499 1500void Runtime::SetImtConflictMethod(ArtMethod* method) { 1501 CHECK(method != nullptr); 1502 CHECK(method->IsRuntimeMethod()); 1503 imt_conflict_method_ = method; 1504} 1505 1506ArtMethod* Runtime::CreateResolutionMethod() { 1507 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 1508 // When compiling, the code pointer will get set later when the image is loaded. 1509 if (IsAotCompiler()) { 1510 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1511 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1512 } else { 1513 method->SetEntryPointFromQuickCompiledCode(GetQuickResolutionStub()); 1514 } 1515 return method; 1516} 1517 1518ArtMethod* Runtime::CreateCalleeSaveMethod() { 1519 auto* method = Runtime::Current()->GetClassLinker()->CreateRuntimeMethod(); 1520 size_t pointer_size = GetInstructionSetPointerSize(instruction_set_); 1521 method->SetEntryPointFromQuickCompiledCodePtrSize(nullptr, pointer_size); 1522 DCHECK_NE(instruction_set_, kNone); 1523 DCHECK(method->IsRuntimeMethod()); 1524 return method; 1525} 1526 1527void Runtime::DisallowNewSystemWeaks() { 1528 CHECK(!kUseReadBarrier); 1529 monitor_list_->DisallowNewMonitors(); 1530 intern_table_->ChangeWeakRootState(gc::kWeakRootStateNoReadsOrWrites); 1531 java_vm_->DisallowNewWeakGlobals(); 1532 heap_->DisallowNewAllocationRecords(); 1533 lambda_box_table_->DisallowNewWeakBoxedLambdas(); 1534} 1535 1536void Runtime::AllowNewSystemWeaks() { 1537 CHECK(!kUseReadBarrier); 1538 monitor_list_->AllowNewMonitors(); 1539 intern_table_->ChangeWeakRootState(gc::kWeakRootStateNormal); // TODO: Do this in the sweeping. 1540 java_vm_->AllowNewWeakGlobals(); 1541 heap_->AllowNewAllocationRecords(); 1542 lambda_box_table_->AllowNewWeakBoxedLambdas(); 1543} 1544 1545void Runtime::BroadcastForNewSystemWeaks() { 1546 // This is used for the read barrier case that uses the thread-local 1547 // Thread::GetWeakRefAccessEnabled() flag. 1548 CHECK(kUseReadBarrier); 1549 monitor_list_->BroadcastForNewMonitors(); 1550 intern_table_->BroadcastForNewInterns(); 1551 java_vm_->BroadcastForNewWeakGlobals(); 1552 heap_->BroadcastForNewAllocationRecords(); 1553 lambda_box_table_->BroadcastForNewWeakBoxedLambdas(); 1554} 1555 1556void Runtime::SetInstructionSet(InstructionSet instruction_set) { 1557 instruction_set_ = instruction_set; 1558 if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) { 1559 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1560 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1561 callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type); 1562 } 1563 } else if (instruction_set_ == kMips) { 1564 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1565 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1566 callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type); 1567 } 1568 } else if (instruction_set_ == kMips64) { 1569 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1570 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1571 callee_save_method_frame_infos_[i] = mips64::Mips64CalleeSaveMethodFrameInfo(type); 1572 } 1573 } else if (instruction_set_ == kX86) { 1574 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1575 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1576 callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type); 1577 } 1578 } else if (instruction_set_ == kX86_64) { 1579 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1580 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1581 callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type); 1582 } 1583 } else if (instruction_set_ == kArm64) { 1584 for (int i = 0; i != kLastCalleeSaveType; ++i) { 1585 CalleeSaveType type = static_cast<CalleeSaveType>(i); 1586 callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type); 1587 } 1588 } else { 1589 UNIMPLEMENTED(FATAL) << instruction_set_; 1590 } 1591} 1592 1593void Runtime::SetCalleeSaveMethod(ArtMethod* method, CalleeSaveType type) { 1594 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType)); 1595 CHECK(method != nullptr); 1596 callee_save_methods_[type] = reinterpret_cast<uintptr_t>(method); 1597} 1598 1599void Runtime::StartProfiler(const char* profile_output_filename) { 1600 profile_output_filename_ = profile_output_filename; 1601 profiler_started_ = 1602 BackgroundMethodSamplingProfiler::Start(profile_output_filename_, profiler_options_); 1603} 1604 1605// Transaction support. 1606void Runtime::EnterTransactionMode(Transaction* transaction) { 1607 DCHECK(IsAotCompiler()); 1608 DCHECK(transaction != nullptr); 1609 DCHECK(!IsActiveTransaction()); 1610 preinitialization_transaction_ = transaction; 1611} 1612 1613void Runtime::ExitTransactionMode() { 1614 DCHECK(IsAotCompiler()); 1615 DCHECK(IsActiveTransaction()); 1616 preinitialization_transaction_ = nullptr; 1617} 1618 1619bool Runtime::IsTransactionAborted() const { 1620 if (!IsActiveTransaction()) { 1621 return false; 1622 } else { 1623 DCHECK(IsAotCompiler()); 1624 return preinitialization_transaction_->IsAborted(); 1625 } 1626} 1627 1628void Runtime::AbortTransactionAndThrowAbortError(Thread* self, const std::string& abort_message) { 1629 DCHECK(IsAotCompiler()); 1630 DCHECK(IsActiveTransaction()); 1631 // Throwing an exception may cause its class initialization. If we mark the transaction 1632 // aborted before that, we may warn with a false alarm. Throwing the exception before 1633 // marking the transaction aborted avoids that. 1634 preinitialization_transaction_->ThrowAbortError(self, &abort_message); 1635 preinitialization_transaction_->Abort(abort_message); 1636} 1637 1638void Runtime::ThrowTransactionAbortError(Thread* self) { 1639 DCHECK(IsAotCompiler()); 1640 DCHECK(IsActiveTransaction()); 1641 // Passing nullptr means we rethrow an exception with the earlier transaction abort message. 1642 preinitialization_transaction_->ThrowAbortError(self, nullptr); 1643} 1644 1645void Runtime::RecordWriteFieldBoolean(mirror::Object* obj, MemberOffset field_offset, 1646 uint8_t value, bool is_volatile) const { 1647 DCHECK(IsAotCompiler()); 1648 DCHECK(IsActiveTransaction()); 1649 preinitialization_transaction_->RecordWriteFieldBoolean(obj, field_offset, value, is_volatile); 1650} 1651 1652void Runtime::RecordWriteFieldByte(mirror::Object* obj, MemberOffset field_offset, 1653 int8_t value, bool is_volatile) const { 1654 DCHECK(IsAotCompiler()); 1655 DCHECK(IsActiveTransaction()); 1656 preinitialization_transaction_->RecordWriteFieldByte(obj, field_offset, value, is_volatile); 1657} 1658 1659void Runtime::RecordWriteFieldChar(mirror::Object* obj, MemberOffset field_offset, 1660 uint16_t value, bool is_volatile) const { 1661 DCHECK(IsAotCompiler()); 1662 DCHECK(IsActiveTransaction()); 1663 preinitialization_transaction_->RecordWriteFieldChar(obj, field_offset, value, is_volatile); 1664} 1665 1666void Runtime::RecordWriteFieldShort(mirror::Object* obj, MemberOffset field_offset, 1667 int16_t value, bool is_volatile) const { 1668 DCHECK(IsAotCompiler()); 1669 DCHECK(IsActiveTransaction()); 1670 preinitialization_transaction_->RecordWriteFieldShort(obj, field_offset, value, is_volatile); 1671} 1672 1673void Runtime::RecordWriteField32(mirror::Object* obj, MemberOffset field_offset, 1674 uint32_t value, bool is_volatile) const { 1675 DCHECK(IsAotCompiler()); 1676 DCHECK(IsActiveTransaction()); 1677 preinitialization_transaction_->RecordWriteField32(obj, field_offset, value, is_volatile); 1678} 1679 1680void Runtime::RecordWriteField64(mirror::Object* obj, MemberOffset field_offset, 1681 uint64_t value, bool is_volatile) const { 1682 DCHECK(IsAotCompiler()); 1683 DCHECK(IsActiveTransaction()); 1684 preinitialization_transaction_->RecordWriteField64(obj, field_offset, value, is_volatile); 1685} 1686 1687void Runtime::RecordWriteFieldReference(mirror::Object* obj, MemberOffset field_offset, 1688 mirror::Object* value, bool is_volatile) const { 1689 DCHECK(IsAotCompiler()); 1690 DCHECK(IsActiveTransaction()); 1691 preinitialization_transaction_->RecordWriteFieldReference(obj, field_offset, value, is_volatile); 1692} 1693 1694void Runtime::RecordWriteArray(mirror::Array* array, size_t index, uint64_t value) const { 1695 DCHECK(IsAotCompiler()); 1696 DCHECK(IsActiveTransaction()); 1697 preinitialization_transaction_->RecordWriteArray(array, index, value); 1698} 1699 1700void Runtime::RecordStrongStringInsertion(mirror::String* s) const { 1701 DCHECK(IsAotCompiler()); 1702 DCHECK(IsActiveTransaction()); 1703 preinitialization_transaction_->RecordStrongStringInsertion(s); 1704} 1705 1706void Runtime::RecordWeakStringInsertion(mirror::String* s) const { 1707 DCHECK(IsAotCompiler()); 1708 DCHECK(IsActiveTransaction()); 1709 preinitialization_transaction_->RecordWeakStringInsertion(s); 1710} 1711 1712void Runtime::RecordStrongStringRemoval(mirror::String* s) const { 1713 DCHECK(IsAotCompiler()); 1714 DCHECK(IsActiveTransaction()); 1715 preinitialization_transaction_->RecordStrongStringRemoval(s); 1716} 1717 1718void Runtime::RecordWeakStringRemoval(mirror::String* s) const { 1719 DCHECK(IsAotCompiler()); 1720 DCHECK(IsActiveTransaction()); 1721 preinitialization_transaction_->RecordWeakStringRemoval(s); 1722} 1723 1724void Runtime::SetFaultMessage(const std::string& message) { 1725 MutexLock mu(Thread::Current(), fault_message_lock_); 1726 fault_message_ = message; 1727} 1728 1729void Runtime::AddCurrentRuntimeFeaturesAsDex2OatArguments(std::vector<std::string>* argv) 1730 const { 1731 if (GetInstrumentation()->InterpretOnly() || UseJit()) { 1732 argv->push_back("--compiler-filter=interpret-only"); 1733 } 1734 1735 // Make the dex2oat instruction set match that of the launching runtime. If we have multiple 1736 // architecture support, dex2oat may be compiled as a different instruction-set than that 1737 // currently being executed. 1738 std::string instruction_set("--instruction-set="); 1739 instruction_set += GetInstructionSetString(kRuntimeISA); 1740 argv->push_back(instruction_set); 1741 1742 std::unique_ptr<const InstructionSetFeatures> features(InstructionSetFeatures::FromCppDefines()); 1743 std::string feature_string("--instruction-set-features="); 1744 feature_string += features->GetFeatureString(); 1745 argv->push_back(feature_string); 1746} 1747 1748void Runtime::UpdateProfilerState(int state) { 1749 VLOG(profiler) << "Profiler state updated to " << state; 1750} 1751 1752void Runtime::CreateJit() { 1753 CHECK(!IsAotCompiler()); 1754 if (GetInstrumentation()->IsForcedInterpretOnly()) { 1755 // Don't create JIT if forced interpret only. 1756 return; 1757 } 1758 std::string error_msg; 1759 jit_.reset(jit::Jit::Create(jit_options_.get(), &error_msg)); 1760 if (jit_.get() != nullptr) { 1761 compiler_callbacks_ = jit_->GetCompilerCallbacks(); 1762 jit_->CreateInstrumentationCache(jit_options_->GetCompileThreshold(), 1763 jit_options_->GetWarmupThreshold()); 1764 jit_->CreateThreadPool(); 1765 } else { 1766 LOG(WARNING) << "Failed to create JIT " << error_msg; 1767 } 1768} 1769 1770bool Runtime::CanRelocate() const { 1771 return !IsAotCompiler() || compiler_callbacks_->IsRelocationPossible(); 1772} 1773 1774bool Runtime::IsCompilingBootImage() const { 1775 return IsCompiler() && compiler_callbacks_->IsBootImage(); 1776} 1777 1778void Runtime::SetResolutionMethod(ArtMethod* method) { 1779 CHECK(method != nullptr); 1780 CHECK(method->IsRuntimeMethod()) << method; 1781 resolution_method_ = method; 1782} 1783 1784void Runtime::SetImtUnimplementedMethod(ArtMethod* method) { 1785 CHECK(method != nullptr); 1786 CHECK(method->IsRuntimeMethod()); 1787 imt_unimplemented_method_ = method; 1788} 1789 1790bool Runtime::IsVerificationEnabled() const { 1791 return verify_ == verifier::VerifyMode::kEnable; 1792} 1793 1794bool Runtime::IsVerificationSoftFail() const { 1795 return verify_ == verifier::VerifyMode::kSoftFail; 1796} 1797 1798LinearAlloc* Runtime::CreateLinearAlloc() { 1799 // For 64 bit compilers, it needs to be in low 4GB in the case where we are cross compiling for a 1800 // 32 bit target. In this case, we have 32 bit pointers in the dex cache arrays which can't hold 1801 // when we have 64 bit ArtMethod pointers. 1802 return (IsAotCompiler() && Is64BitInstructionSet(kRuntimeISA)) 1803 ? new LinearAlloc(low_4gb_arena_pool_.get()) 1804 : new LinearAlloc(arena_pool_.get()); 1805} 1806 1807} // namespace art 1808